3v4l.org

run code in 300+ PHP versions simultaneously
<?php $something = array( 'value1', 'value2' ); $somethingElse = array( 'value2', 'value3' ); var_dump( array_merge( $something, $somethingElse ) );
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(4) { [0]=> string(6) "value1" [1]=> string(6) "value2" [2]=> string(6) "value2" [3]=> string(6) "value3" }

preferences:
235.55 ms | 406 KiB | 343 Q